add_sources(Cepstrum.cpp Cepstrumc.cpp Cepstrum_and_Spectrum.cpp
            Cepstrogram.cpp
            Formant_extensions.cpp LineSpectralFrequencies.cpp
            LPC.cpp LPC_and_Cepstrumc.cpp LPC_and_Formant.cpp LPC_and_LFCC.cpp
            LPC_and_LineSpectralFrequencies.cpp LPC_and_Polynomial.cpp
            LPC_to_Spectrum.cpp LPC_to_Spectrogram.cpp
            LPC_and_Tube.cpp
            Sound_and_LPC.cpp Sound_and_LPC_robust.cpp
            Sound_and_Cepstrum.cpp Tube.cpp
            VocalTractTier.cpp
            praat_LPC_init.cpp manual_LPC.cpp)
